Has anyone tried these? I'm thinking that the wider dispersion of the spark over the twinned electrode points would help with a more even burn of the fuel/air mix. But do they have any real advantage over the more conventional platinum plugs?
personally i wouldnt waste my money on them ay.if your going to run high booost i would stick with coppers
Sorry, I should have said, my Zed is an N/A. Also, I thought coppers burned out quicker than platinum or iridium plugs.
irridums suck !!!! copper plugs for the win. they dont foul. they have a higher intensity spark and they cost 2 bucks each all drag racing teams and high HP cars run coppers...
Really not worth the wasted money, never had good results uning any Splitfire plug (but plenty of bad ones from poor heat range ratings) - run STOCKERS or one range colder if you've a modified engine - Iridium plugs are OK (life of upto 20,000km though) - Look at what nissan did with the fine wire electrodes - it REDUCES gap voltage requirements and improves the initial flame kernal - Have you seen ANY vehicle with low spark current COIL ON PLUG ignition run standard copper cores ??? There's reasons WHY the manufacturer does things. I should know - I've studied combustion thermodynamics..
More ''marketing'' BS .... Electricity will ALWAYS follow the path of least resistance, so it will only spark to one of the electrodes at any given time. That being the case, it will be the same as a single electrode plug anyway. The only possible advantage may be that if one of the electrodes started to deteriorate, the spark would seek the other electrode as a path of lesser resistance. If that situation ever arose, it's probably time for a plug change anyway.
Not taking the piss but i did have a chuckle at this. "I should know - I've studied combustion thermodynamics". The blokes right though, its there for a good reason and thats effectively what should be maintained. Unless of coarse there are mods to which other type plugs are required. Coppers are good for the turbo scene but iridium ive found are fine with a NA. You pay more but definitely well worth the hassle free time being spent replacing the coppers. The stated twin spark plugs, i find it hard to believe the plug actually sends a spark to each contact simultaneously. Will be either one or the other. Depending which is set closest. PS, damn the bloke above beat me to it... more or less what he said!
Correct! Electricity will take the path of least resistance.. And right on the plug change bit too! Just a marketing ploy - how about the centre electrode wearing unevenly ? When Splitfire plugs came on the market 15 years ago (who I might add, used old moulds from the defunt KLG plug company) they were the greatest way to destroy your VL turbo in a few dyno pulls The forked ground electrodes have LESS thermal mass, so they run hotter, causing pre-ignition piston failures.
Irridium's great for the turbo's too!!! But be prepared to try a couple of different heat ranges before settling on a final plug - Denso are good, NGK's the best in my opinion. Iridium's got a massive heat advantage over platinum before melting, not quite as tolerant to overheating (the iridium oxidises slightly when the wrong ones are picked) I've plenty here from vehicles (a 505rwhp stock stroke CA18) where the ground electrode has a hole eroded due to the extremely hard CDI discharge. We couldn't get any other plug to consistently make the power or the mileage (5lt/100km)
stick with coppers. if there becomes a problem with them you will know they need to be changed. unlike iridiums etc they do a very good job at still working somewhat when buggard...
FWIW, I run NGK Iridium plugs in everything I have, motorcycles, turbo and NA cars along with my Formula Vee. That thing is using the same set from 5 years ago. I have NEVER had any dramas and NEVER changed an Iridium plug in anything. Dont need to. My wifes Pulsar Turbo is closing in on 100,000 + kays since i built it. Never even looked at them. Some of the bollocks I have read concerning plugs goes beyond hillarious, well into stupidity. L8r E
They do, but they also burn out under detonation, which makes them perfect for tuners as they will get destroyed before piston crowns. But in all seriousness, even on a regular engine, coppers will last about 20,000k's and cost $12 for six.
Thanks for the replies and the info, Guys. From the replies, there seems to be no real advantage over standard single electrode platinums (even the box photo shows the spark only going to one electrode) so I think I will stick with the NGK platinums I have been using ever since I've had the car, changing them at each 100K km service whether they need changing or not.
it SAYS it is designed for 100,000 MILES it would wear out one side then use the other side. good for people who cant be bothered doing their plugs.
Yeah same, I personally find changing spark plugs a pain in the ass A SPECIALLY on the zed. Never had a problem with Platinum's or Iridium's.
Really? Has to be the easiest bloody job in the world lol. More time consuming than...oh...say, a mower...maybe? edit: also epic lulz at A SPECIALLY, it's ESPECIALLY smarty
Either way you must have too much time on your hands to go on the forums looking for grammar mistakes, and I'm pretty sure buying Platinum's that last 100k is easier and cheaper in the long run than replacing coppers every 20k x 5 = 100k? Just my 2c.
